linux-kernel - Re: Broken ondemand scheduler in Linux 2.6.30+ on Pentium IVs

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Message-ID: <20091026182304.GB4657@srcf.ucam.org>
Date:	Mon, 26 Oct 2009 18:23:04 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Robert Bradbury <robert.bradbury@...il.com>
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: Re: Broken ondemand scheduler in Linux 2.6.30+ on Pentium IVs

...except that conservative has the same latency threshold as ondemand, 
which I'm sure wasn't supposed to be the case. I've added the cpufreq 
list to Cc:.

(Summary: p4-clockmod had its latency changed to avoid ondemand using 
it, which was done to avoid the performance impact that ondemand 
generates on p4s. I thought that conservative was still supposed to work 
here, but as it has the same latency threshold it doesn't)

-- 
Matthew Garrett | mjg59@...f.ucam.org
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